<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
    request.setCharacterEncoding("UTF-8");
    int sender = 101;

    if(sender != 101){
        session.setAttribute("receiver", 101);
    }
    session.setAttribute("sender", sender);
    // 重定向到另一个页面
    response.sendRedirect("/index.jsp");
%>
